I have a very simple application with a single view, containing several UILabels. Upon running in Simulator, the Xcode console returns the error:
libM
What worked for me was to change within general > Deployment Info > Main Interface to CDVLaunchScreen and do the same within general > App Icons and Launch Images > Launch Screen File to CDVLaunchScreen as well.
I come from Ionic, so this might not be a problem for those who develop in Swift / Objective-C.